1diff --git a/README.md b/README.md
 2index 70516dc..55d103f 100644
 3--- a/README.md
 4+++ b/README.md
 5@@ -35,7 +35,7 @@ Listing them inside RawFormulas.ts is unwieldy.
 6 Pass name of calling formula into all functions that throw user-facing errors, or have some sort of error mapper.
 7 
 8 ### Dates have special types
 9-Like dollars, dates are special types, but can be compared as if they're primatives. For example, this statement is
10+Like dollars, dates are special types, but can be compared as if they're primitives. For example, this statement is
11 valid inside a cell: `=DATE(1992, 6, 6) > =DATE(1992, 6, 10)`. We should check types and and have Date-to-number
12 conversion inside parser.js.
13 
14diff --git a/src/ExcelTime.ts b/src/ExcelTime.ts
15new file mode 100644
16index 0000000..2f3a8cb
17--- /dev/null
18+++ b/src/ExcelTime.ts
19@@ -0,0 +1,45 @@
20+/// <reference path="../node_modules/moment/moment.d.ts"/>
21+import * as moment from "moment";
22+
23+class ExcelTime {
24+  // Value representing the time of day. Between 0 and 1, exclusive on end.
25+  private fractionOfDay: number;
26+
27+
28+  /**
29+   * Create ExcelTime from hours, seconds, and minutes. All capable of being overloaded, but are modded.
30+   * @param hours in this timestamp.
31+   * @param minutes in this timestamp.
32+   * @param seconds in this timestamp.
33+   */
34+  constructor(hours: number, minutes: number, seconds: number) {
35+    this.fractionOfDay = (((hours % 24) * 60* 60) + ((minutes % 60) * 60) + (seconds % 60)) / 86400;
36+  }
37+
38+
39+  /**
40+   * Returns the number of seconds in this timestamp.
41+   * @returns {number} of seconds.
42+   */
43+  toNumber() : number {
44+    return this.fractionOfDay;
45+  }
46+
47+  /**
48+   * Returns the string in the format "12:04:09 AM".
49+   * @returns {string} representing this timestamp.
50+   */
51+  toString() : string {
52+    return moment.utc([1900]).startOf("year").add(this.fractionOfDay * 86400, "seconds").format("h:mm:ss A");
53+  }
54+
55+  /**
56+   * Equality checking.
57+   * @param other ExcelTime to compare to.
58+   * @returns {boolean} true if equals
59+   */
60+  equals(other: ExcelTime) : boolean {
61+    return other.toNumber() === this.toNumber();
62+  }
63+
64+}
65\ No newline at end of file
66diff --git a/src/RawFormulas/Date.ts b/src/RawFormulas/Date.ts
67index aa9a509..b440e2c 100644
68--- a/src/RawFormulas/Date.ts
69+++ b/src/RawFormulas/Date.ts
70@@ -24,9 +24,9 @@ import {
71  */
72 var DATE = function (...values) : ExcelDate {
73   const FIRST_YEAR = 1900;
74+  ArgsChecker.checkLength(values, 3);
75   var year = Math.abs(Math.floor(TypeCaster.firstValueAsNumber(values[0]))); // No negative values for year
76   var month = Math.floor(TypeCaster.firstValueAsNumber(values[1])) - 1; // Months are between 0 and 11.
77-  ArgsChecker.checkLength(values, 3);
78   var day = Math.floor(TypeCaster.firstValueAsNumber(values[2])) - 1; // Days are also zero-indexed.
79   var m = moment.utc(ORIGIN_MOMENT)
80     .add(2, "days")
81@@ -790,9 +790,16 @@ var TODAY = function (...values) {
82 };
83 
84 
85+var TIME = function (...values) {
86+  ArgsChecker.checkLength(values, 3);
87+  var hours = Math.abs(Math.floor(TypeCaster.firstValueAsNumber(values[0])));
88+  var minutes = Math.floor(TypeCaster.firstValueAsNumber(values[1])) - 1;
89+  var seconds = Math.floor(TypeCaster.firstValueAsNumber(values[2])) - 1;
90+};
91+
92+
93 // Functions unimplemented.
94 var WORKDAY$INTL;
95-var TIME;
96 var WORKDAY;
97 
98 export {