推荐理由：《Time Calculator》是一款适用于苹果系统的办公类软件APP。You can add, subtract and convert time-expressions.《Time Calculator》大小1.8MB，在本站深受5639位玩家喜爱和下载。要找等，赶紧下载到手机吧。
How long have you been at work today? - So type in \①⑦③⓪ - ⑦④⑤ =\
where ①⑦ stands for ⑤pm so ①⑦③⓪ means ⑤③⓪pm. As a result you get ⓪⑨④⑤ (⑨ hours and ④⑤ minutes). you can convert this result in fractions of hours. Therefore press \hours\ (at the bottom, right in the middle) and you get \⑨.⑦⑤ hrs\. Alternatively, you can enter factions of hours. For example ①.⑦⑤
⓪①⑤ = will result in ②⓪⓪ (means two hours)
Adding multiple timespans
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You can add up several amounts of time, such as working hours (hours account) or flight times (log / personal flight log if you are a pilot). Example An airplane has a total running time of ④⑧⑦③h and ⑤③min. In the airplanes flightlog book, individual flight hours are to be added up.
④⑧⑦③⑤③
①②③
....
①③④ and so on. (this is the reason why the editor has a few more lines) By pushing \=\, the result will appear in the output field, and with the buttons (at the bottom) you can convert the result.
Calculation of timespans crossing the dateline
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Suppose you are working night shift and you are beginning at ⑧①③pm in the evening. Your work ends on ④③②am in the early morning. For the calculation, enter
④③② -②⓪①③ =
In mode \d hms\ (at the bottom, far left button), you get the following output \timespan ⓪⑧h ①⑨m ⓪⓪s. Unlike this, if you would like to subtract hours and minutes in the mathematical sense, press \hms\ (bottom, second from left) and you get \-①⑤h ④①m ⓪⓪s\.
Further Examples
⓪⓪⓪② -②③⑤⑧ =
(mode \d dms\) timespan ⓪⓪h⓪④m⓪⓪s
(Midnight cross)
②③⑤⑧-⓪⓪⓪② =
(mode \dms\)
②③h⑤⑥m⓪⓪s
(mathematical result)
Midnight cross will be only detected, when the first number is minor the second one.
Examples for Entering timespans and clock times
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①⓪④⑤③⓪
(①⓪ hours, ④⑤ minutes and ③⓪ seconds)
③⓪②⓪
(③⓪ minutes and ②⓪ seconds)
①⓪①④.⑤
(①⓪ hours and ①④.⑤ minutes or ①④ min and ③⓪ sec)
(②⑤ seconds)
