optional/compulsory (depending on context), single

—

The absolutely passed time since the beginning of the dive, given in seconds as a real number.

Normally, one <divetime> element must occur inside every <waypoint> statement. The only exception is the calculation of an ascent profile for which no time/depth values can be given.

<waypoint>

—

<waypoint>

(see also <waypoint>)

<!-- 26 min since beginning of dive -->
<divetime>1560.0</divetime>