Convert acre inch/hour to acre inch/minute

Acre inch/hour and Acre inch/minute both are the units of volume flow rate. SI Derived Unit of volume flow rate is cubic meter/second.

Acre inch/hour is not the default SI Derived Unit of volume flow rate category.

Acre inch/hour Symbol is and alternate name for this unit is Not Available.
Acre inch/minute Symbol is and alternate name for this unit is Not Available.

Scale Factor of Acre inch/hour as compare to SI Derived Unit cubic meter/second is 0.0285528203704 and scale factor of Acre inch/minute as compare to SI Derived Unit cubic meter/second is 1.71316922222.

To convert acre inch/minute to acre inch/hour following formula will be used:

Acre inch/hour = 0.016666666666706 acre inch/minute

Acre inch/hour ↔ Acre inch/minute Conversion Table
1 Acre inch/hour = 0.016666666666706 acre inch/minute
2 Acre inch/hour = 0.033333333333411 acre inch/minute
3 Acre inch/hour = 0.050000000000117 acre inch/minute
4 Acre inch/hour = 0.066666666666822 acre inch/minute
5 Acre inch/hour = 0.083333333333528 acre inch/minute
6 Acre inch/hour = 0.10000000000023 acre inch/minute
7 Acre inch/hour = 0.11666666666694 acre inch/minute
8 Acre inch/hour = 0.13333333333364 acre inch/minute
9 Acre inch/hour = 0.15000000000035 acre inch/minute
10 Acre inch/hour = 0.16666666666706 acre inch/minute
11 Acre inch/hour = 0.18333333333376 acre inch/minute
12 Acre inch/hour = 0.20000000000047 acre inch/minute
13 Acre inch/hour = 0.21666666666717 acre inch/minute
14 Acre inch/hour = 0.23333333333388 acre inch/minute
15 Acre inch/hour = 0.25000000000058 acre inch/minute
16 Acre inch/hour = 0.26666666666729 acre inch/minute
17 Acre inch/hour = 0.28333333333399 acre inch/minute
18 Acre inch/hour = 0.3000000000007 acre inch/minute
19 Acre inch/hour = 0.31666666666741 acre inch/minute
20 Acre inch/hour = 0.33333333333411 acre inch/minute
21 Acre inch/hour = 0.35000000000082 acre inch/minute
22 Acre inch/hour = 0.36666666666752 acre inch/minute
23 Acre inch/hour = 0.38333333333423 acre inch/minute
24 Acre inch/hour = 0.40000000000093 acre inch/minute
25 Acre inch/hour = 0.41666666666764 acre inch/minute
26 Acre inch/hour = 0.43333333333435 acre inch/minute
27 Acre inch/hour = 0.45000000000105 acre inch/minute
28 Acre inch/hour = 0.46666666666776 acre inch/minute
29 Acre inch/hour = 0.48333333333446 acre inch/minute
30 Acre inch/hour = 0.50000000000117 acre inch/minute
31 Acre inch/hour = 0.51666666666787 acre inch/minute
32 Acre inch/hour = 0.53333333333458 acre inch/minute
33 Acre inch/hour = 0.55000000000128 acre inch/minute
34 Acre inch/hour = 0.56666666666799 acre inch/minute
35 Acre inch/hour = 0.5833333333347 acre inch/minute
36 Acre inch/hour = 0.6000000000014 acre inch/minute
37 Acre inch/hour = 0.61666666666811 acre inch/minute
38 Acre inch/hour = 0.63333333333481 acre inch/minute
39 Acre inch/hour = 0.65000000000152 acre inch/minute
40 Acre inch/hour = 0.66666666666822 acre inch/minute
41 Acre inch/hour = 0.68333333333493 acre inch/minute
42 Acre inch/hour = 0.70000000000163 acre inch/minute
43 Acre inch/hour = 0.71666666666834 acre inch/minute
44 Acre inch/hour = 0.73333333333505 acre inch/minute
45 Acre inch/hour = 0.75000000000175 acre inch/minute
46 Acre inch/hour = 0.76666666666846 acre inch/minute
47 Acre inch/hour = 0.78333333333516 acre inch/minute
48 Acre inch/hour = 0.80000000000187 acre inch/minute
49 Acre inch/hour = 0.81666666666857 acre inch/minute
50 Acre inch/hour = 0.83333333333528 acre inch/minute

Acre inch/hour Conversion Table:

Conversion of Acre inch/hour to other volume flow rate Units.

acre inch/hour	Other Units	Converter
1 acre inch/hour =	2 acre foot/day	Acre Inch/hour to Acre Foot/day
1 acre inch/hour =	1.9999880015235 acre foot/day [survey]	Acre Inch/hour to Acre Foot/day [survey]
1 acre inch/hour =	0.083333333333528 acre foot/hour	Acre Inch/hour to Acre Foot/hour
1 acre inch/hour =	0.083332833396617 acre foot/hour [survey]	Acre Inch/hour to Acre Foot/hour [survey]
1 acre inch/hour =	0.0013888888888881 acre foot/minute	Acre Inch/hour to Acre Foot/minute
1 acre inch/hour =	0.0013888805566103 acre foot/minute [survey]	Acre Inch/hour to Acre Foot/minute [survey]
1 acre inch/hour =	2.3148148148172E-5 acre foot/second	Acre Inch/hour to Acre Foot/second
1 acre inch/hour =	2.3148009276838E-5 acre foot/second [survey]	Acre Inch/hour to Acre Foot/second [survey]
1 acre inch/hour =	23.999999999933 acre inch/day	Acre Inch/hour to Acre Inch/day
1 acre inch/hour =	23.999856018248 acre inch/day [survey]	Acre Inch/hour to Acre Inch/day [survey]
1 acre inch/hour =	0.99999400075824 acre inch/hour [survey]	Acre Inch/hour to Acre Inch/hour [survey]
1 acre inch/hour =	0.016666666666706 acre inch/minute	Acre Inch/hour to Acre Inch/minute
1 acre inch/hour =	0.016666566679323 acre inch/minute [survey]	Acre Inch/hour to Acre Inch/minute [survey]
1 acre inch/hour =	0.00027777777777897 acre inch/second	Acre Inch/hour to Acre Inch/second
1 acre inch/hour =	0.00027777611132206 acre inch/second [survey]	Acre Inch/hour to Acre Inch/second [survey]
1 acre inch/hour =	15516.734659169 barrel/day [petroleum]	Acre Inch/hour to Barrel/day [petroleum]
1 acre inch/hour =	15073.781840843 barrel/day [UK]	Acre Inch/hour to Barrel/day [UK]
1 acre inch/hour =	21022.672763965 barrel/day [US beer/wine]	Acre Inch/hour to Barrel/day [US Beer/wine]
1 acre inch/hour =	20688.979545596 barrel/day [US]	Acre Inch/hour to Barrel/day [US]
1 acre inch/hour =	646.53061079783 barrel/hour [petroleum]	Acre Inch/hour to Barrel/hour [petroleum]
1 acre inch/hour =	628.07424336958 barrel/hour [UK]	Acre Inch/hour to Barrel/hour [UK]
1 acre inch/hour =	875.94469850124 barrel/hour [US beer/wine]	Acre Inch/hour to Barrel/hour [US Beer/wine]
1 acre inch/hour =	862.04081439775 barrel/hour [US]	Acre Inch/hour to Barrel/hour [US]
1 acre inch/hour =	10.775510179972 barrel/minute [petroleum]	Acre Inch/hour to Barrel/minute [petroleum]
1 acre inch/hour =	10.46790405616 barrel/minute [UK]	Acre Inch/hour to Barrel/minute [UK]
1 acre inch/hour =	14.599078308324 barrel/minute [US beer/wine]	Acre Inch/hour to Barrel/minute [US Beer/wine]
1 acre inch/hour =	14.367346906629 barrel/minute [US]	Acre Inch/hour to Barrel/minute [US]
1 acre inch/hour =	0.17959183633286 barrel/second [petroleum]	Acre Inch/hour to Barrel/second [petroleum]
1 acre inch/hour =	0.17446506760266 barrel/second [UK]	Acre Inch/hour to Barrel/second [UK]
1 acre inch/hour =	0.24331797180582 barrel/second [US beer/wine]	Acre Inch/hour to Barrel/second [US Beer/wine]
1 acre inch/hour =	0.23945578177715 barrel/second [US]	Acre Inch/hour to Barrel/second [US]
1 acre inch/hour =	8.7119998918108E-5 billion cubic foot/day	Acre Inch/hour to Billion Cubic Foot/day
1 acre inch/hour =	3.6299999549202E-6 billion cubic foot/hour	Acre Inch/hour to Billion Cubic Foot/hour
1 acre inch/hour =	6.0499999248645E-8 billion cubic foot/minute	Acre Inch/hour to Billion Cubic Foot/minute
1 acre inch/hour =	1.0083333208108E-9 billion cubic foot/second	Acre Inch/hour to Billion Cubic Foot/second
1 acre inch/hour =	246696367.9997 centilitre/day	Acre Inch/hour to Centilitre/day
1 acre inch/hour =	10279015.333336 centilitre/hour	Acre Inch/hour to Centilitre/hour
1 acre inch/hour =	171316.92222206 centilitre/minute	Acre Inch/hour to Centilitre/minute
1 acre inch/hour =	2855.28203704 centilitre/second	Acre Inch/hour to Centilitre/second
1 acre inch/hour =	5.9185606113639E-7 cubem/day	Acre Inch/hour to Cubem/day
1 acre inch/hour =	2.4660669214025E-8 cubem/hour	Acre Inch/hour to Cubem/hour
1 acre inch/hour =	4.1101115356649E-10 cubem/minute	Acre Inch/hour to Cubem/minute
1 acre inch/hour =	6.8501858927781E-12 cubem/second	Acre Inch/hour to Cubem/second
1 acre inch/hour =	2466963679.997 cubic centimetre/day	Acre Inch/hour to Cubic Centimetre/day
1 acre inch/hour =	102790153.33336 cubic centimetre/hour	Acre Inch/hour to Cubic Centimetre/hour
1 acre inch/hour =	1713169.2222206 cubic centimetre/minute	Acre Inch/hour to Cubic Centimetre/minute
1 acre inch/hour =	28552.8203704 cubic centimetre/second	Acre Inch/hour to Cubic Centimetre/second
1 acre inch/hour =	2466963.679997 cubic decimetre/day	Acre Inch/hour to Cubic Decimetre/day
1 acre inch/hour =	102790.15333336 cubic decimetre/hour	Acre Inch/hour to Cubic Decimetre/hour
1 acre inch/hour =	1713.1692222206 cubic decimetre/minute	Acre Inch/hour to Cubic Decimetre/minute
1 acre inch/hour =	28.5528203704 cubic decimetre/second	Acre Inch/hour to Cubic Decimetre/second
1 acre inch/hour =	2.466963679997 cubic dekametre/day	Acre Inch/hour to Cubic Dekametre/day
1 acre inch/hour =	0.10279015333336 cubic dekametre/hour	Acre Inch/hour to Cubic Dekametre/hour
1 acre inch/hour =	0.0017131692222206 cubic dekametre/minute	Acre Inch/hour to Cubic Dekametre/minute
1 acre inch/hour =	2.85528203704E-5 cubic dekametre/second	Acre Inch/hour to Cubic Dekametre/second
1 acre inch/hour =	87119.998918108 cubic foot/day	Acre Inch/hour to Cubic Foot/day
1 acre inch/hour =	3629.9999549202 cubic foot/hour	Acre Inch/hour to Cubic Foot/hour
1 acre inch/hour =	60.499999248645 cubic foot/minute	Acre Inch/hour to Cubic Foot/minute
1 acre inch/hour =	1.0083333208108 cubic foot/second	Acre Inch/hour to Cubic Foot/second
1 acre inch/hour =	150543358.13067 cubic inch/day	Acre Inch/hour to Cubic Inch/day
1 acre inch/hour =	6272639.9220977 cubic inch/hour	Acre Inch/hour to Cubic Inch/hour
1 acre inch/hour =	104543.99870147 cubic inch/minute	Acre Inch/hour to Cubic Inch/minute
1 acre inch/hour =	1742.3999783622 cubic inch/second	Acre Inch/hour to Cubic Inch/second
1 acre inch/hour =	2.466963679997E-6 cubic kilometre/day	Acre Inch/hour to Cubic Kilometre/day
1 acre inch/hour =	1.0279015333336E-7 cubic kilometre/hour	Acre Inch/hour to Cubic Kilometre/hour
1 acre inch/hour =	1.7131692222206E-9 cubic kilometre/minute	Acre Inch/hour to Cubic Kilometre/minute
1 acre inch/hour =	2.85528203704E-11 cubic kilometre/second	Acre Inch/hour to Cubic Kilometre/second
1 acre inch/hour =	2466.963679997 cubic metre/day	Acre Inch/hour to Cubic Metre/day
1 acre inch/hour =	102.79015333336 cubic metre/hour	Acre Inch/hour to Cubic Metre/hour
1 acre inch/hour =	1.7131692222206 cubic metre/minute	Acre Inch/hour to Cubic Metre/minute
1 acre inch/hour =	0.0285528203704 cubic meter/second	Acre Inch/hour to Cubic Meter/second
1 acre inch/hour =	5.9185606113639E-7 cubic mile/day	Acre Inch/hour to Cubic Mile/day
1 acre inch/hour =	2.4660669214025E-8 cubic mile/hour	Acre Inch/hour to Cubic Mile/hour
1 acre inch/hour =	4.1101115356649E-10 cubic mile/minute	Acre Inch/hour to Cubic Mile/minute
1 acre inch/hour =	6.8501858927781E-12 cubic mile/second	Acre Inch/hour to Cubic Mile/second
1 acre inch/hour =	2466963679997 cubic millimetre/day	Acre Inch/hour to Cubic Millimetre/day
1 acre inch/hour =	102790153333.36 cubic millimetre/hour	Acre Inch/hour to Cubic Millimetre/hour
1 acre inch/hour =	1713169222.2206 cubic millimetre/minute	Acre Inch/hour to Cubic Millimetre/minute
1 acre inch/hour =	28552820.3704 cubic millimetre/second	Acre Inch/hour to Cubic Millimetre/second
1 acre inch/hour =	3226.6666265944 cubic yard/day	Acre Inch/hour to Cubic Yard/day
1 acre inch/hour =	134.44444277477 cubic yard/hour	Acre Inch/hour to Cubic Yard/hour
1 acre inch/hour =	2.2407407129128 cubic yard/minute	Acre Inch/hour to Cubic Yard/minute
1 acre inch/hour =	0.037345678548546 cubic yard/second	Acre Inch/hour to Cubic Yard/second
1 acre inch/hour =	1.0083333208108 cusec	Acre Inch/hour to Cusec
1 acre inch/hour =	24669636.79997 decilitre/day	Acre Inch/hour to Decilitre/day
1 acre inch/hour =	1027901.5333336 decilitre/hour	Acre Inch/hour to Decilitre/hour
1 acre inch/hour =	17131.692222206 decilitre/minute	Acre Inch/hour to Decilitre/minute
1 acre inch/hour =	285.528203704 decilitre/second	Acre Inch/hour to Decilitre/second
1 acre inch/hour =	246696.3679997 dekalitre/day	Acre Inch/hour to Dekalitre/day
1 acre inch/hour =	10279.015333336 dekalitre/hour	Acre Inch/hour to Dekalitre/hour
1 acre inch/hour =	171.31692222206 dekalitre/minute	Acre Inch/hour to Dekalitre/minute
1 acre inch/hour =	2.85528203704 dekalitre/second	Acre Inch/hour to Dekalitre/second
1 acre inch/hour =	542656.14627139 gallon/day [UK]	Acre Inch/hour to Gallon/day [UK]
1 acre inch/hour =	651702.85568431 gallon/day [US]	Acre Inch/hour to Gallon/day [US]
1 acre inch/hour =	22610.672761265 gallon/hour [UK]	Acre Inch/hour to Gallon/hour [UK]
1 acre inch/hour =	27154.285653472 gallon/hour [US]	Acre Inch/hour to Gallon/hour [US]
1 acre inch/hour =	376.84454602158 gallon/minute [UK]	Acre Inch/hour to Gallon/minute [UK]
1 acre inch/hour =	452.57142755858 gallon/minute [US]	Acre Inch/hour to Gallon/minute [US]
1 acre inch/hour =	6.2807424336958 gallon/second [UK]	Acre Inch/hour to Gallon/second [UK]
1 acre inch/hour =	7.5428571259803 gallon/second [US]	Acre Inch/hour to Gallon/second [US]
1 acre inch/hour =	0.00017131692222206 hectare meter/minute	Acre Inch/hour to Hectare Meter/minute
1 acre inch/hour =	0.2466963679997 hectare metre/day	Acre Inch/hour to Hectare Metre/day
1 acre inch/hour =	0.010279015333336 hectare metre/hour	Acre Inch/hour to Hectare Metre/hour
1 acre inch/hour =	2.85528203704E-6 hectare metre/second	Acre Inch/hour to Hectare Metre/second
1 acre inch/hour =	24669.63679997 hectolitre/day	Acre Inch/hour to Hectolitre/day
1 acre inch/hour =	1027.9015333336 hectolitre/hour	Acre Inch/hour to Hectolitre/hour
1 acre inch/hour =	17.131692222206 hectolitre/minute	Acre Inch/hour to Hectolitre/minute
1 acre inch/hour =	0.285528203704 hectolitre/second	Acre Inch/hour to Hectolitre/second
1 acre inch/hour =	2466.963679997 kilolitre/day	Acre Inch/hour to Kilolitre/day
1 acre inch/hour =	102.79015333336 kilolitre/hour	Acre Inch/hour to Kilolitre/hour
1 acre inch/hour =	1.7131692222206 kilolitre/minute	Acre Inch/hour to Kilolitre/minute
1 acre inch/hour =	0.0285528203704 kilolitre/second	Acre Inch/hour to Kilolitre/second
1 acre inch/hour =	2466963679997 lambda/day	Acre Inch/hour to Lambda/day
1 acre inch/hour =	102790153333.36 lambda/hour	Acre Inch/hour to Lambda/hour
1 acre inch/hour =	1713169222.2206 lambda/minute	Acre Inch/hour to Lambda/minute
1 acre inch/hour =	28552820.3704 lambda/second	Acre Inch/hour to Lambda/second
1 acre inch/hour =	2466963.679997 litre/day	Acre Inch/hour to Litre/day
1 acre inch/hour =	102790.15333336 litre/hour	Acre Inch/hour to Litre/hour
1 acre inch/hour =	1713.1692222206 litre/minute	Acre Inch/hour to Litre/minute
1 acre inch/hour =	28.5528203704 litre/second	Acre Inch/hour to Litre/second
1 acre inch/hour =	2466963679.997 millilitre/day	Acre Inch/hour to Millilitre/day
1 acre inch/hour =	102790153.33336 millilitre/hour	Acre Inch/hour to Millilitre/hour
1 acre inch/hour =	1713169.2222206 millilitre/minute	Acre Inch/hour to Millilitre/minute
1 acre inch/hour =	28552.8203704 millilitre/second	Acre Inch/hour to Millilitre/second
1 acre inch/hour =	2.0E-6 million acre foot/day	Acre Inch/hour to Million Acre Foot/day
1 acre inch/hour =	8.3333333333528E-8 million acre foot/hour	Acre Inch/hour to Million Acre Foot/hour
1 acre inch/hour =	1.3888888888881E-9 million acre foot/minute	Acre Inch/hour to Million Acre Foot/minute
1 acre inch/hour =	2.3148148148172E-11 million acre foot/second	Acre Inch/hour to Million Acre Foot/second
1 acre inch/hour =	0.087119998918108 million cubic foot/day	Acre Inch/hour to Million Cubic Foot/day
1 acre inch/hour =	0.0036299999549202 million cubic foot/hour	Acre Inch/hour to Million Cubic Foot/hour
1 acre inch/hour =	6.0499999248645E-5 million cubic foot/minute	Acre Inch/hour to Million Cubic Foot/minute
1 acre inch/hour =	1.0083333208108E-6 million cubic foot/second	Acre Inch/hour to Million Cubic Foot/second
1 acre inch/hour =	0.54265614627139 million gallon/day [UK]	Acre Inch/hour to Million Gallon/day [UK]
1 acre inch/hour =	0.65170285568431 million gallon/day [US]	Acre Inch/hour to Million Gallon/day [US]
1 acre inch/hour =	0.022610672761265 million gallon/hour [UK]	Acre Inch/hour to Million Gallon/hour [UK]
1 acre inch/hour =	0.027154285653472 million gallon/hour [US]	Acre Inch/hour to Million Gallon/hour [US]
1 acre inch/hour =	0.00037684454602158 million gallon/minute [UK]	Acre Inch/hour to Million Gallon/minute [UK]
1 acre inch/hour =	0.00045257142755858 million gallon/minute [US]	Acre Inch/hour to Million Gallon/minute [US]
1 acre inch/hour =	6.2807424336958E-6 million gallon/second [UK]	Acre Inch/hour to Million Gallon/second [UK]
1 acre inch/hour =	7.5428571259803E-6 million gallon/second [US]	Acre Inch/hour to Million Gallon/second [US]
1 acre inch/hour =	40.33333283243 miner's inch [AZ/ CA/ OR]	Acre Inch/hour to Miner's Inch [AZ/ CA/ OR]
1 acre inch/hour =	38.719999519133 miner's inch [CO]	Acre Inch/hour to Miner's Inch [CO]
1 acre inch/hour =	50.285714173202 miner's inch [ID/ WA/ NM]	Acre Inch/hour to Miner's Inch [ID/ WA/ NM]
1 acre inch/hour =	86824983.403489 ounce/day [UK]	Acre Inch/hour to Ounce/day [UK]
1 acre inch/hour =	83417965.52763 ounce/day [US]	Acre Inch/hour to Ounce/day [US]
1 acre inch/hour =	3617707.6418093 ounce/hour [UK]	Acre Inch/hour to Ounce/hour [UK]
1 acre inch/hour =	3475748.5636513 ounce/hour [US]	Acre Inch/hour to Ounce/hour [US]
1 acre inch/hour =	60295.127363437 ounce/minute [UK]	Acre Inch/hour to Ounce/minute [UK]
1 acre inch/hour =	57929.142727568 ounce/minute [US]	Acre Inch/hour to Ounce/minute [US]
1 acre inch/hour =	1004.9187893913 ounce/second [UK]	Acre Inch/hour to Ounce/second [UK]
1 acre inch/hour =	965.48571212548 ounce/second [US]	Acre Inch/hour to Ounce/second [US]
1 acre inch/hour =	527.9999934424 petrograd standard/day	Acre Inch/hour to Petrograd Standard/day
1 acre inch/hour =	21.99999972678 petrograd standard/hour	Acre Inch/hour to Petrograd Standard/hour
1 acre inch/hour =	0.366666662113 petrograd standard/minute	Acre Inch/hour to Petrograd Standard/minute
1 acre inch/hour =	0.0061111110352167 petrograd standard/second	Acre Inch/hour to Petrograd Standard/second
1 acre inch/hour =	2606811.433096 quart/day	Acre Inch/hour to Quart/day
1 acre inch/hour =	108617.14321094 quart/hour	Acre Inch/hour to Quart/hour
1 acre inch/hour =	1810.2857178869 quart/minute	Acre Inch/hour to Quart/minute
1 acre inch/hour =	30.171428631448 quart/second	Acre Inch/hour to Quart/second
1 acre inch/hour =	2466.963679997 stere/day	Acre Inch/hour to Stere/day
1 acre inch/hour =	102.79015333336 stere/hour	Acre Inch/hour to Stere/hour
1 acre inch/hour =	1.7131692222206 stere/minute	Acre Inch/hour to Stere/minute
1 acre inch/hour =	0.0285528203704 stere/second	Acre Inch/hour to Stere/second
1 acre inch/hour =	87.119998918108 thousand cubic foot/day	Acre Inch/hour to Thousand Cubic Foot/day
1 acre inch/hour =	3.6299999549202 thousand cubic foot/hour	Acre Inch/hour to Thousand Cubic Foot/hour
1 acre inch/hour =	0.060499999248645 thousand cubic foot/minute	Acre Inch/hour to Thousand Cubic Foot/minute
1 acre inch/hour =	0.0010083333208108 thousand cubic foot/second	Acre Inch/hour to Thousand Cubic Foot/second
1 acre inch/hour =	8.7119998918108E-8 trillion cubic foot/day	Acre Inch/hour to Trillion Cubic Foot/day
1 acre inch/hour =	3.6299999549202E-9 trillion cubic foot/hour	Acre Inch/hour to Trillion Cubic Foot/hour
1 acre inch/hour =	6.0499999248645E-11 trillion cubic foot/minute	Acre Inch/hour to Trillion Cubic Foot/minute
1 acre inch/hour =	1.0083333208108E-12 trillion cubic foot/second	Acre Inch/hour to Trillion Cubic Foot/second