Hi Whitey,
This may be a little of a long way round, but try using an onchange event handler on the date information field in your first form to write to a hidden field in the second form.
For example:
<form name="form01">
<input type="text" name="date" onchange="window.document.form02.date.value = this.value;">
</form>
<form name="form02">
<input type="hidden" name="date" onchange="updateHiddenField()">
</form>
You could use an onsubmit event handler if you prefer in the second form to grab the value from the first field and stuff it into an hidden field. Onsubmit may be more widely supported than onchange, but both methods described require JavaScript to be enabled.
Kind Regards,
David Grant